I've read up so much, and received so many different opinions. I have a feeling it is a lot simpler than I'm making it.
I currently have a crappy motor I pulled from a toy car. I wanted to control the rate at which it ran, so I slapped a pot' in there. It works, however, not how I would like it to. I would turn the knob of the pot slowly and nothing would happen, I will turn it until it hits around 270 degrees. (300 degrees is the total). Once it neared the end, the engine would shoot up and go on full blast.
Some say I need a pot' with a lower rating. I tried one with 10 ohm resistance, and now I'm using 5 ohms. It still does the same thing.
THEN I was told I needed to introduce a transistor into the circuit. So I went and bought a bread board and a pc board. Now, it goes from battery -> collector -> out the emitter -> pot' -> back to battery. (A side question: Where does the "base" of the transistor go??)
Once the transistor was installed, nothing changed except the motor speed lessened. It didn't give the full range like I wanted. It still shot up to max speed at around 270. I want a gradual increase from 0 through 300.
Here is my potentiometer:
Resistance: 5k ohms
Rated power: 0.5 watts
Sliding Noise: <47mV
Total rotation: 300 degrees
On the front it says 500VDC...
I believe I used a 600mW NPN transistor.
Thank you for the help guys!
Just realized. This might be in the wrong section. Please move it if you can... Sorry
I currently have a crappy motor I pulled from a toy car. I wanted to control the rate at which it ran, so I slapped a pot' in there. It works, however, not how I would like it to. I would turn the knob of the pot slowly and nothing would happen, I will turn it until it hits around 270 degrees. (300 degrees is the total). Once it neared the end, the engine would shoot up and go on full blast.
Some say I need a pot' with a lower rating. I tried one with 10 ohm resistance, and now I'm using 5 ohms. It still does the same thing.
THEN I was told I needed to introduce a transistor into the circuit. So I went and bought a bread board and a pc board. Now, it goes from battery -> collector -> out the emitter -> pot' -> back to battery. (A side question: Where does the "base" of the transistor go??)
Once the transistor was installed, nothing changed except the motor speed lessened. It didn't give the full range like I wanted. It still shot up to max speed at around 270. I want a gradual increase from 0 through 300.
Here is my potentiometer:
Resistance: 5k ohms
Rated power: 0.5 watts
Sliding Noise: <47mV
Total rotation: 300 degrees
On the front it says 500VDC...
I believe I used a 600mW NPN transistor.
Thank you for the help guys!
Just realized. This might be in the wrong section. Please move it if you can... Sorry
Last edited: